Concrete cracking is a concern for all home owners and should be addressed immediately. CCCS will remove any debris and grind a smooth v-groove with diamond coated crack chasing blades. We then clean and pack the deep crevice with packing sand or closed cell PE foam backer rod. The most important component is the flexible polyurethane construction sealant specifically designed for concrete and masonry applications. This aggressive exterior caulk is waterproof and will be ready for heavy traffic loads in 24 hrs. A final coat of fine finishing sand helps to visually blend the reapir with the existing concrete.